Printing press



M. W. BRUESHABER PRINTING PRESS June 2o, 1933.

Filed June 29, 1951 2 Sheets-Sheet 1 lllllln.,

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ATTORN June 20, 1933.

M. W. BRUESHABER PRINTING PRESS Filed June 29, 1951 2 Sheets-Sheet 2 3f gm'fw 1 1 K o N rifina- 5/% Ofl O fpm@ J/ff 20 llllllllllllllIIIIIIIIIIIIIHIIIIII IIIII'IIIIIIIHI /9 "1" 'iin .95 I 33 VENTOR {LA} ATTO R N E Patented June 270, 1933 y L9 1 5, 1 l

UNITED STATES PATENT j MARTIN W. BRUESIIABER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE GOSS PRINTING PRESS COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS PRINTING PRE-SS Application filed June 29, 1931. Serial No. 547,621.`

The present invention relates to a new and couple provided with means for reducing the improved rotary printing press and more vibration usually present when such couples particularly to a rotary printing press adaptare operated at high speeds. A further obed for the high speed printing of newspaject is the provision of means for equalizing '5 pers. Y the torque on the plate cylinder shafts of Objects and advantages of the invention rotary printingcouples. Still another obwill be set forth in part hereinafter and in ject is the provision of a novel-means for part will be obvious herefrom, or may be increasing the quality of impressions and learned by practice with the invention, the reducing wear on the parts of a rotary per- Yl same being realized and attained by means fecting printing couple which is operated at t3 together with the description, serve to eX- reducing the out of balance condition of the Fig. 3 is a sectional view taken on the line cylinders. The increased mass not only tends OC' of the instrumentalities and combinations high speeds. y'pointed out in the appended claims. ln accordance with the present embodi- The invention consists in the novel parts, ment of the invention, the printing press constructions, arrangements, combinations comprises a rotary perfecting couple formed l5 and improvements herein shown and deof a pair of impression cylinders cooperate5 scribed. l ing with a pair of plate cylinders which are The accompanying drawings, referred to geared together in the usual manner and are herein vand constituting apart hereof, illusrotatably journaled in end frames at the ends trate one embodiment of the invention, and of the cylinders, and means are provided for plain the principles of the invention. plate cylinders due to the difference in Of the drawings Weight betweenthe printing plates carried Fig. 1 is an end view looking from one end by the plate cylinders. As embodied, the of a rotary printing couple embodying the balancing means comprise fly-wheels secure- 25 present, invention, with certain parts broly fastened to the outer ends of the plate cyl- 5 ken away; inder shafts, which iiy wheels are dynamical- Fig. 2 is an end` view looking from the ly balanced and increase the rotating mass of other end of the mechanism shown in Fig. the cylinders and at the same time reduce the 1, with certain parts broken away; deflection of the relatively long and narrow 3 3 of Fig, 1 to .increase the evenness of running of the In the usual practice of printing newspacylinders, but also increases the ratio between pers on high speed rotary presses,'when runthe unbalanced load and the rotating mass. ning collect or cross-associate runs, the plate It will be understood that the foregoing cylinders areconsiderably out of balance due general description and the following de- 55 to the difference in the weight of the several tailed description as well, are exemplary and plates carried by the plate cylinders. This explanatory of the invention, but are not difference in weight and resulting lack of restrictive thereof. balance reduces the speed at which the cyl- Referring now in detail to the present pre- 4@ inders may be satisfactorily operated and ferred and illustrative embodiment ofthe 90 consequently holds down the maximum calnvention, as shown in the accompanying pacity of the press. While the condition redrawings, the rotary perfecting printing couferred to is particularly apparent at high ple comprises a pair of relatively-long and speeds oncollect and cross-associate runs, it narrow impression cylinders l0, 11 posigenerally exists under all operating conditioned between a pair of relatively long and tions, resulting in vibration and wear which narrow platecylinders 12, 13. Plate cylinare eliminated or greatly reduced by the ders 12 and 13 are provided with plate securpresent invention. ing means 14 of conventional construction The present invention has for its object the which securely hold the curved printing 59 provision of a novel improved rotary printing plates 14 on the surface 0f the plate cylinders Cil and the plate and impression cylinders are suitably journaled in the side frames 15, 16 of the press so that the plates carried by the plate cylinders 12 and 13 press the paper web to be printed against the surface of the impression cylinders 10 and 11, respectively, in the usual manner. v Means are provided for driving the cylinders inproper timed relation at the same peripheral speed and for this purpose the plate cylinder shafts 17, 18 are provided with gears 19, 20 which mesh with similar gears 21, 22 mounted on one end of impression cylinder shafts 23, 24, respectively. At the other end of shafts 23, 24 are mounted intermeshing gears 25, 26, of which gear 25 ymeshes with the main driving gear 27 which is driven in turn by bevel gears 28 from the vertical driving shaft 29. i

Suitable inking mechanism 30 is provided for each couple and is driven from the plate cylinders by gears 31, 32. f

As illustratively embodied, the balancing means compriserelatively large fly wheels 33, one of which is securely fastened to each of the outer ends of the plate cylinder shafts 17 and 18 and are dynamically balanced with respect thereto so that they run without vibration at all press speeds. vThe fly wheels are preferably substantial duplicates of each other and each comprises an annular portion 34 of relatively heavy mass connected with a hub portion 35 by means of a thin vweb 36. As embodied the mass of the annular portion of the fly wheels is relatively large compared to the'difl'erence in weight of the plates 14', but is much smaller than the mass of the cylinders. i

The fly wheels 33, being positioned at the ends of the shafts and externally of the side frames 15 and 16 between which the plate cylinders are supported tend to reduce the de; flection of the central portion of the cylinders, thereby rendering the cylinders and plates more true,increasing the uniformity of pressure between the plates and impression cylinders and rendering the cylinder'more nearly dynamically balanced.

The invention in its broader aspects is not limited to the specific mechanisms shown and described but departures may be made therefrom within the scope of the accompanying claims without departing from the principles of the invention and without'sacrificing its chief advantages.

What I claim is 1. A rotary printing couple including in combination a plate cylinder, an impression cylinder cooperating therewith, journals for said cylinders at the ends of the cylinders and fly Wheels mounted coaXially with the plate cylinder one on the outer side of each plate cylinder journal and rigid with respect to the plate cylinder. 'l

2. A rotary printing couple including in combination a plate cylinder, an impression' cylinder cooperating therewith, a pair of fly wheels rigidly fastened to the plate cylinder at its ends and spaced therefrom and journals for said plate cylinder between the fly wheels and cylinder.

3. A rotary printing couple including in combination a relatively long and narrow plate cylinder, a relatively long and narrow impression cylinder cooperating therewith, a pair of fly wheels rigidly fastened to the plate cylinder at its ends and spaced therefrom and journals for said plate cylinder between the ily wheels and cylinder.

4:. A rotary printing couple including in combination a relatively long and narrow plate cylinder, a relatively long and narrow impression cylinder cooperating therewith, a pair of fly wheels rigidly fastened to the plate cylinder at its ends and journals for said plate cylinder between the fly wheels and cylinder. f

5. A rotary perfecting printing couple including in combination a pair of impression cylinders, a pair of plate cylinders cooperating with the impression cylinders to form a rotary perfecting couple, said impression cylinders being positioned between the plate cylinders, pairs of fly` wheels, one pair for each plate cylinder, side frames at the ends of the cylinders in which the cylinders are journalled, intermeshing gears at one end of the impression cylinders, and intermeshing gears at the other end of the cylinders for gearing together each plate cylinder with its impression cylinder.

6. A rotary perfecting printing couple including in combination a pair of relatively long and narrow impression cylinders, a pair of relatively long and narrow plate cylinders cooperating with the impression cylinders to form a rotary perfecting couple, said impression cylinders being positioned between the plate cylinders, pairs of Hy wheels, one pair for each plate cylinder, side frames at the ends of the cylinders in which the cylinders are journalled, intermeshing gears at one end of the impression cylinders, and intermeshing gears at the other end of the cylinders for gearing together each plate cylinder with its impression cylinder.

7. A rotary perfecting printing couple including in combination a pair of impression cylinders, a pair of plate cylinders to be plated for straight, cross-associate 0r collect runs and cooperating with the impression cylinders to form a rotary perfecting couple, said impression cylinders being positioned between the plate cylinders, pairs of fly wheels, one pair for each plate cylinder, side frames at the ends of the cylinders in which the cylinders are journalled', intermeshing gears at one end of the impression cylinders, and` intermeshing gears at the other end of the cylinders for gearing to.

gether each plate cylinder with its impression cylinder.

8. A rotary perfecting printing couple including in combination a pair of relatively long and narrow impression cylinders, a pair of relatively long and narrow plate cylinders to be plated for straight, cross-associate or collect runs and cooperating with the impression cylinders to form a rotary perfecting couple, said impression cylinders being positioned between the plate cylinders, pairs of flywheels, one pair for each plate cylinder, side frames at the ends of the cylinders in which the cylinders are journalled, intermeshing gears at one end of the impression cylinders, and intermeshing gears at the other end of the cylinders for gearing together each plate cylinder with its impression cylinder.

9. A rotary perfecting printing couple including in combination a relatively long and narrow plate cylinder, a relatively long and narrow impression cylinder cooperating therewith, a pair of fly wheels rigidly fastened to the ends of the shaft of the plate cylinder and of larger diameter than the cylinder and journals between the fly wheels and the plate cylinder.

10. A rotary perfecting printing couple including in combination a plate cylinder and a cooperating impression cylinder geared together, means for securing a plurality of plates longitudinally and circumferentially of the plate cylinder, a pair of fly wheels rigidly fastened to the ends of the plate cylinder shaft and journals between the fly wheels and the plate cylinder. i

ll. A rotary printing couple including in combination a long and narrow plate cylinder, an impression cylinder cooperating therewith, a fly wheel rigidly fastened to the plate cylinder at one end and spaced therefrom and a journal for the plate cylinder between the fly wheel and cylinder.

l2. A rotary printing couple including in combination, a plate cylinder, an impression cylinder cooperating therewith, and a iiy wheel rotated by the plate cylinder and mounted near one end thereof.

13. A rotary printing couple including in combination, a plate cylinder, an impression cylinder cooperating therewith, and fly wheels rotated by the plate cylinder and mounted near the ends thereof.

In Vtestimony whereof, I have signed my name to this specification.

MARTIN W. BRUESHABER. 

